Lamp-socket.



No. 665,582. Patented Jan. 8, l90l. H. R. SARGENT.

LAMP SOCKET.

(Apph t nfll dAug 14 1900) (No Iodal.)

Inventor Howard R.Sarg enli. I by fltgg Witnesses.

UNITED STATES PATENT QFFICE.

HOWARD R. SARGENT, OF SOHENEOTADY, NEW YORK, ASSIGNOR TO THE GENERALELECTRIC COMPANY, OF NEW YORK.

LAM P-SOCKET.

SIPEGIFICATION' forming part of Letters Patent No. 665,582, dated.January 8, 1901.

Application filed August 14, 1900- Serial No. 26,838. (No model.)

To all whom it Wtaty concern/.-

Be it known that I, HOWARD R. SARGENT, a citizen of the UnitedStates,residing at Schenectady, county of Schenectady, State of NewYork, have invented certain new and useful Improvements in Lamp-Sockets,(Case No. 1,615,) of which the following is a specification.

This invention relates to improvements in IQ lamp-sockets or similararticles.

Figure 1 is an elevation, partly broken away, of a lamp-socket embodyingmyinvention. Fig. 2 is a sectional view of the upper portion thereof.Figs. 3 and 4 are plan views :5 of said portion; and Figs. 5 and 6 are aplan and elevation, respectively, of said upper portion embodied with myimprovements.

As shown in Fig. l, V is a metallic shell surrounding theinsulating-base and lamp-rezo taining member of the socket, which basesupports the contacts. The usual switch-key projects from theinsulating-base through the shell V, and the base is suspended from thewires 1, which are connected to the line-terminals on the base. Ametallic cap B, having an opening for the passage of the linewires, issecured to the shellV by screws W, which are supported in arms orprojections G, which extend from the crown of the cap.

A lining A of insulating material, such as ordinary insulating-fiber,andhaving an opening F registering with the opening in the cap, isinterposed between the metallic cap B and the upper portion of theinsulating-base of the socket to prevent current from flowing from anyof the interior contacts or wires to and through the metallic cap,whereby danger of fire or of persons receiving shocks therefrom isavoided. The use of this lining A does not interfere in any manner withthe use of the lining of the shell V, well known to those skilled inart. The difficulty of properly securing the lining A in position is dueto the fact that ordinary securing means would pass through the cap andlining and would defeat the very object for which the lining isinterposed. This diificulty has been overcome in the following manner:As shown in Figs. 1 and 3, the arms 0 are formed integral with a yoke Y,which is located within the interior of the crown of the cap. As shownin Fig. 2,

nozzle Z is provided with an interior perforation for the passage of thewires I, which is the opening in the cap above referred to, and

on one endis a sleeve L, of reduced thickness, which fits in the centralperforation of the yoke Y. As shown in Fig. 2, after the yoke Y has beenplaced within the interior of the crown of the cap B the sleeve of thenozzle Z is inserted in the holes in the cap and yoke, respectively.

Fig. at shows how the sleeve L is bent or riveted over the yoke to holdthe yoke, the cap, and the nozzle together as they are assembled in Fig.2, the cap being omitted in Fig. 4. for the sake of clearness. The arms0 now extend down substantially parallel with the cap B and are threadedfor the reception of screws W, which engage in bayonet-joints V in theshell V, to hold the shell and cap together. This has been the customarymode of securing the parts together.

For the purpose of this invention the arms 0 are provided with shouldersS near their lower ends, and, as shown in Figs. 5 and 6, (from which thecap 13 is omitted) the insulating-lining A is cut away at T, so as tofit the arms above these shoulders. As the lining will yield slightlyunder pressure, it is inserted in the cap by forcing it over the lowershouldered portion of the arms C until its cutaway portions T engage thesmaller portions of the arms. In this position it is absolutely rigid,as the curvature of the cap B prevents its being moved farther towardthe crown, the engagement of the recess portions T with the smallerportion of the arms prevents it from rotation, and the engagement of itsportions adjoining the recess portions with the shoulders S of the armsprevents it from falling from the cap. I

What I claim as new, and desire to secure by Letters Patent of theUnited States, is

1. In an article of substantially the-character described, thecombination with a cap pro- 5 vided with interior retaining means, of aninsulating-lining made yieldable so that it can be forced over theretaining means, which liningis held thereby in the interior of the cap.

2. In an article of substantially the charac- 10o ter described, thecombination with a metallic cap for covering the insulating-base, of ayoke secured in the crown of the cap, and provided with arms extendingwithin the interior of the cap, and an insulating-lining for protectingthe metallic cap from live contacts and retained by the arms within thecap.

3. In an article of substantially the character described, thecombination with a metallic cap for covering the end of theinsulatingbase andhaving an opening for the circuitwires in its crown,of an annular yoke secured in the crown of the cap beneath the opening,and provided with arms extending within the interior of the cap, and aninsulating-lining for protecting the cap from live contacts and retainedby the arms within the cap and provid'ed with a hole for thecircuit-wires.

a. In an article of substantially the character described, thecombination with a metallic cap for covering the end of theinsulatingbase, of arms extending fromthe crown of the cap within theinterior of the cap, and a lining of insulating material between the endof the insulating-base and the cap, said lining being retained Withinthe cap by the arms.

5. In an article of substantially the character described, thecombination with a metallic cap for covering the end of theinsulatingbase,of arms extending in the interior thereof, and havingshoulders formed thereon, and an insulating-lining for protecting themetallic cap from live contacts and held within the cap by saidshoulders.

6. In an article of substantially the character described, thecombination with a metallic cap for covering the end of theinsulatingbase, of retaining means secured to the interior of the crownof the cap, and an insulating-lining for protecting the metallic capfrom live contacts and held inside the cap by said means.

7. In an article of substantially the character described, thecombination with a metallic cap for covering the end of theinsulatingbase, of a nozzle secured in the crown of the cap, retainingmeans held by said nozzle within the interior of the cap, and aninsulating-lining for protecting the metallic cap from live contacts andheld within the cap by said retaining means.

8. In an article of substantially the character described, thecombination with the metallic cap V for covering the end of theinsulating-base, of the nozzle Z, the yoke Y, and the insulating-liningA for protecting the metallic cap from live contacts and held within thecap by the yoke.

9. In an article of substantially the character described, thecombination With a metallic cap for covering the end of theinsulatingbase, of parts secured Within the interior of the cap, andprovided with shoulders, and an insulating-lining for protecting the capfrom live contacts and held within the cap by the shoulders.

10. In an article of substantially the character described, thecombination with a cap, of arms extending from the crown of the cap,each having enlarged shoulders, and an insulating-lining adapted to besprung over said shoulders, said lining being cut away to receive theportions of the arms between the shoulders and the crown.

11. In an article of substantially the character described, thecombination with a cap, of projections extending in the interiorthereof, and an insulating-lining adapted to be sprung over saidprojections, said lining being held by said projections within the cap.

12. In an article of substantially the character described, thecombination with a cap, of projections extending in the interiorthereof, and having small and enlarged portions, and aninsulating-lining cutaway at its sides to fit the small portions of saidprojections, and adapted to be sprung over the enlarged portions of saidprojections, said lining being held within the cap by the said enlargedportions, and held from movementwithin the cap by the engagement of itscut-away portions with the small portions of the projections.

13. In an article of substantially the character described, thecombination with a metallic cap for covering the end of theinsulating-base and having an openingin its crown, of a nozzle extendingthrough the opening, an annular yoke resting against the inner portionof the crown of the cap, and surrounding the opening in the crown andthe nozzle, the nozzle being riveted over the yoke to hold the partstogether, the yoke being provided with arms, and an insulatinglining forprotecting the metallic cap from live contacts and held by the armswithin the cap.

14. In an article of substantially the character described, thecombination with a cap, of projections extending in the interiorthereof, and an insulating-lining adapted to be sprung over saidprojection, said lining being held by said projections within the cap.

15. In an article of substantially the character described, thecombination with a cap, having a hole in its crown for the passage ofthe wires leading to the lamp, of projections extending in the interiorof the cap, and an insulating-lining having a hole registering with thehole in the vcap, said lining being held by said projections within thecap.

In witness whereof I have hereunto set my hand this 13th day of August,1900.

HOWARD R. SARGENT.

Witnesses:

BENJAMIN B. HULL, MARGARET E. WOOLLEY.

